FRED ..... don't do it!!!!
Oh the humanity!!!!
I think you do skew things a bit. You have now doubled the number of section cards and the probability of drawing continuous left sector cards, etc. is increased. Does't always take a rocket scientist to see the danger.

Although what you suggest is accurate for an OVERLORD game. But consider that usually twice as many cards make up a hand as well.

I just separated 4 decks that accidentally got mixed up over time. For a while I was playing with either too few or too many of various section cards. It helped that I marked one deck with a black dot in the corner of the card face.